Connect PostHog to Langfuse

Both apps 25PostHog 11Langfuse 14

• Trigger
  Action Performed

  Triggers when an action is performed by a user.

• Action
  Add annotation

  Create a new annotation on the project timeline (content, date_marker, scope). POST /api/projects/:project_id/annotations/

• Action
  Capture Event

  Captures an event.

• Action
  Evaluate feature flags

  Evaluate all feature flag values for a given distinct_id/person, returning flag states for use in automation branching. Public POST /flags endpoint (project token auth).

• Action
  Get person

  Retrieve a single person by ID. GET /api/projects/:project_id/persons/:id/

• Action
  List annotations

  List annotations in the project. GET /api/projects/:project_id/annotations/

• Action
  List cohorts

  List cohorts defined in the project. GET /api/projects/:project_id/cohorts/

• Action
  List feature flags

  List feature flags defined in the project. GET /api/projects/:project_id/feature_flags/

• Action
  List insights

  List saved insights (charts/graphs) in the project. GET /api/projects/:project_id/insights/

• Action
  List persons

  List/search persons in the project, optionally filtered by distinct_id or properties. GET /api/projects/:project_id/persons/

• Action
  Update person

  Update a person's properties by ID. PATCH /api/projects/:project_id/persons/:id/

• Trigger
  New Trace

  Polling trigger: fires for newly created traces (dedup by trace id / timestamp). GET /api/public/traces

• Action
  Add Comment

  Add a comment to a trace/observation/session/prompt object. POST /api/public/comments

• Action
  Add Dataset

  Create a new dataset. POST /api/public/v2/datasets

• Action
  Add Dataset Item

  Create an item (input/expected_output/metadata) in a dataset. POST /api/public/dataset-items

• Action
  Add Prompt

  Create a new prompt version (text or chat). POST /api/public/v2/prompts

• Action
  Add Score

  Create a score attached to a trace/observation/session (numeric, categorical, or boolean). POST /api/public/scores

• Action
  Delete Trace

  Delete a trace by id. DELETE /api/public/traces/{traceId}

• Action
  Get Project

  Reads the Langfuse project that the connection's project-scoped API key belongs to.

• Action
  Get Prompt

  Get a prompt by name (and optional version/label). GET /api/public/v2/prompts/{promptName}

• Action
  Get Trace

  Get a single trace by id, including nested observations/scores. GET /api/public/traces/{traceId}

• Action
  List Dataset Items

  List items in a dataset. GET /api/public/dataset-items

• Action
  List Datasets

  List all datasets in the project. GET /api/public/v2/datasets

• Action
  List Prompts

  List all prompts in the project. GET /api/public/v2/prompts

• Action
  List Scores

  List scores with optional filters. GET /api/public/v2/scores

No trigger or action matches that. Ask your agent to add it: it reads the API documentation and builds what you describe.